From d330a5befb88875a9b3d2db62f9b74dadf660b13 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Sun, 14 Mar 2010 18:17:54 -0400 Subject: ext4: Fix estimate of # of blocks needed to write indirect-mapped files http://bugzilla.kernel.org/show_bug.cgi?id=15420 Signed-off-by: Jan Kara Signed-off-by: "Theodore Ts'o" --- fs/ext4/inode.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'fs/ext4') diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 986120f30066..11119e07233b 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -1035,7 +1035,7 @@ static int ext4_indirect_calc_metadata_amount(struct inode *inode, sector_t lblock) { struct ext4_inode_info *ei = EXT4_I(inode); - int dind_mask = EXT4_ADDR_PER_BLOCK(inode->i_sb) - 1; + sector_t dind_mask = ~((sector_t)EXT4_ADDR_PER_BLOCK(inode->i_sb) - 1); int blk_bits; if (lblock < EXT4_NDIR_BLOCKS) @@ -1050,7 +1050,7 @@ static int ext4_indirect_calc_metadata_amount(struct inode *inode, } ei->i_da_metadata_calc_last_lblock = lblock & dind_mask; ei->i_da_metadata_calc_len = 1; - blk_bits = roundup_pow_of_two(lblock + 1); + blk_bits = order_base_2(lblock); return (blk_bits / EXT4_ADDR_PER_BLOCK_BITS(inode->i_sb)) + 1; } -- cgit v1.2.2 From 37f328eb60a94779dd020084209fc4db2d6444a0 Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Wed, 24 Mar 2010 20:06:41 -0400 Subject: ext4: Fix spelling of CONTIG_FS_EXT3 to CONFIG_FS_EXT3 Oops. (Blush.) Thanks to Sedat Dilek for pointing this out. Signed-off-by: "Theodore Ts'o" --- fs/ext4/super.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'fs/ext4') diff --git a/fs/ext4/super.c b/fs/ext4/super.c index ce84a6ed4a48..f4b038f51f31 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -4068,7 +4068,7 @@ static int ext4_get_sb(struct file_system_type *fs_type, int flags, return get_sb_bdev(fs_type, flags, dev_name, data, ext4_fill_super,mnt); } -#if !defined(CONTIG_EXT2_FS) && !defined(CONFIG_EXT2_FS_MODULE) && defined(CONFIG_EXT4_USE_FOR_EXT23) +#if !defined(CONFIG_EXT2_FS) && !defined(CONFIG_EXT2_FS_MODULE) && defined(CONFIG_EXT4_USE_FOR_EXT23) static struct file_system_type ext2_fs_type = { .owner = THIS_MODULE, .name = "ext2", @@ -4095,7 +4095,7 @@ static inline void register_as_ext2(void) { } static inline void unregister_as_ext2(void) { } #endif -#if !defined(CONTIG_EXT3_FS) && !defined(CONFIG_EXT3_FS_MODULE) && defined(CONFIG_EXT4_USE_FOR_EXT23) +#if !defined(CONFIG_EXT3_FS) && !defined(CONFIG_EXT3_FS_MODULE) && defined(CONFIG_EXT4_USE_FOR_EXT23) static struct file_system_type ext3_fs_type = { .owner = THIS_MODULE, .name = "ext3", -- cgit v1.2.2 From ba69f9ab7df844125898104e854e063b47c26637 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Wed, 24 Mar 2010 20:18:37 -0400 Subject: ext4: Don't use delayed allocation by default when used instead of ext3 When ext4 driver is used to mount a filesystem instead of the ext3 file system driver (through CONFIG_EXT4_USE_FOR_EXT23), do not enable delayed allocation by default since some ext3 users and application writers have developed unfortunate expectations about the safety of writing files on systems subject to sudden and violent death without using fsync(). Signed-off-by: Jan Kara Signed-off-by: "Theodore Ts'o" --- fs/ext4/super.c | 25 ++++++++++++++++--------- 1 file changed, 16 insertions(+), 9 deletions(-) (limited to 'fs/ext4') diff --git a/fs/ext4/super.c b/fs/ext4/super.c index f4b038f51f31..29c6875d9b4d 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -68,7 +68,21 @@ static int ext4_statfs(struct dentry *dentry, struct kstatfs *buf); static int ext4_unfreeze(struct super_block *sb); static void ext4_write_super(struct super_block *sb); static int ext4_freeze(struct super_block *sb); +static int ext4_get_sb(struct file_system_type *fs_type, int flags, + const char *dev_name, void *data, struct vfsmount *mnt); +#if !defined(CONFIG_EXT3_FS) && !defined(CONFIG_EXT3_FS_MODULE) && defined(CONFIG_EXT4_USE_FOR_EXT23) +static struct file_system_type ext3_fs_type = { + .owner = THIS_MODULE, + .name = "ext3", + .get_sb = ext4_get_sb, + .kill_sb = kill_block_super, + .fs_flags = FS_REQUIRES_DEV, +}; +#define IS_EXT3_SB(sb) ((sb)->s_bdev->bd_holder == &ext3_fs_type) +#else +#define IS_EXT3_SB(sb) (0) +#endif ext4_fsblk_t ext4_block_bitmap(struct super_block *sb, struct ext4_group_desc *bg) @@ -2539,7 +2553,8 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) * enable delayed allocation by default * Use -o nodelalloc to turn it off */ - set_opt(sbi->s_mount_opt, DELALLOC); + if (!IS_EXT3_SB(sb)) + set_opt(sbi->s_mount_opt, DELALLOC); if (!parse_options((char *) data, sb, &journal_devnum, &journal_ioprio, NULL, 0)) @@ -4096,14 +4111,6 @@ static inline void unregister_as_ext2(void) { } #endif #if !defined(CONFIG_EXT3_FS) && !defined(CONFIG_EXT3_FS_MODULE) && defined(CONFIG_EXT4_USE_FOR_EXT23) -static struct file_system_type ext3_fs_type = { - .owner = THIS_MODULE, - .name = "ext3", - .get_sb = ext4_get_sb, - .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV, -}; - static inline void register_as_ext3(void) { int err = register_filesystem(&ext3_fs_type); -- cgit v1.2.2 From c4caae25187ff3f5e837c6f04eb1acc2723c72d3 Mon Sep 17 00:00:00 2001 From: Eric Sandeen Date: Tue, 23 Mar 2010 21:32:00 -0400 Subject: ext4: Fixed inode allocator to correctly track a flex_bg's used_dirs When used_dirs was introduced for the flex_groups struct, it looks like the accounting was not put into place properly, in some places manipulating free_inodes rather than used_dirs. Signed-off-by: Eric Sandeen Signed-off-by: "Theodore Ts'o" --- fs/ext4/ialloc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'fs/ext4') diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c index 361c0b9962a8..57f6eef6ccd6 100644 --- a/fs/ext4/ialloc.c +++ b/fs/ext4/ialloc.c @@ -263,7 +263,7 @@ void ext4_free_inode(handle_t *handle, struct inode *inode) ext4_group_t f; f = ext4_flex_group(sbi, block_group); - atomic_dec(&sbi->s_flex_groups[f].free_inodes); + atomic_dec(&sbi->s_flex_groups[f].used_dirs); } } @@ -773,7 +773,7 @@ static int ext4_claim_inode(struct super_block *sb, if (sbi->s_log_groups_per_flex) { ext4_group_t f = ext4_flex_group(sbi, group); - atomic_inc(&sbi->s_flex_groups[f].free_inodes); + atomic_inc(&sbi->s_flex_groups[f].used_dirs); } } gdp->bg_checksum = ext4_group_desc_csum(sbi, group, gdp); -- cgit v1.2.2 From 5a0e3ad6af8660be21ca98a971cd00f331318c05 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 24 Mar 2010 17:04:11 +0900 Subject: include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo Guess-its-ok-by: Christoph Lameter Cc: Ingo Molnar Cc: Lee Schermerhorn --- fs/ext4/block_validity.c | 1 + fs/ext4/inode.c | 1 + fs/ext4/mballoc.c | 1 + fs/ext4/migrate.c | 1 + fs/ext4/move_extent.c | 1 + fs/ext4/xattr_security.c | 1 + 6 files changed, 6 insertions(+) (limited to 'fs/ext4') diff --git a/fs/ext4/block_validity.c b/fs/ext4/block_validity.c index 983f0e127493..538c48655084 100644 --- a/fs/ext4/block_validity.c +++ b/fs/ext4/block_validity.c @@ -18,6 +18,7 @@ #include #include #include +#include #include "ext4.h" struct ext4_system_zone { diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 11119e07233b..5381802d6052 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -39,6 +39,7 @@ #include #include #include +#include #include "ext4_jbd2.h" #include "xattr.h" diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index 54df209d2eed..bde9d0b170c2 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -23,6 +23,7 @@ #include "mballoc.h" #include +#include #include /* diff --git a/fs/ext4/migrate.c b/fs/ext4/migrate.c index 8b87bd0eac95..34dcfc52ef44 100644 --- a/fs/ext4/migrate.c +++ b/fs/ext4/migrate.c @@ -13,6 +13,7 @@ */ #include +#include #include "ext4_jbd2.h" #include "ext4_extents.h" diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c index aa5fe28d180f..d1fc662cc311 100644 --- a/fs/ext4/move_extent.c +++ b/fs/ext4/move_extent.c @@ -15,6 +15,7 @@ #include #include +#include #include "ext4_jbd2.h" #include "ext4_extents.h" #include "ext4.h" diff --git a/fs/ext4/xattr_security.c b/fs/ext4/xattr_security.c index 983c253999a7..8b145e98df07 100644 --- a/fs/ext4/xattr_security.c +++ b/fs/ext4/xattr_security.c @@ -7,6 +7,7 @@ #include #include #include +#include #include "ext4_jbd2.h" #include "ext4.h" #include "xattr.h" -- cgit v1.2.2