diff options
author | Martin Waitz <tali@admingilde.org> | 2005-05-01 11:59:26 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-05-01 11:59:26 -0400 |
commit | 67be2dd1bace0ec7ce2dbc1bba3f8df3d7be597e (patch) | |
tree | 317d114a0288d3b19ef9902f94b536a5a8731dbd /include/linux/fs.h | |
parent | 6013d5445f9a6d0b28090027868f455c5012d1cc (diff) |
[PATCH] DocBook: fix some descriptions
Some KernelDoc descriptions are updated to match the current code.
No code changes.
Signed-off-by: Martin Waitz <tali@admingilde.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/fs.h')
-rw-r--r-- | include/linux/fs.h | 100 |
1 files changed, 52 insertions, 48 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index 3f825b085c8d..4edba067a717 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h | |||
@@ -1065,71 +1065,75 @@ int sync_inode(struct inode *inode, struct writeback_control *wbc); | |||
1065 | * with a particular exported file system - particularly enabling nfsd and | 1065 | * with a particular exported file system - particularly enabling nfsd and |
1066 | * the filesystem to co-operate when dealing with file handles. | 1066 | * the filesystem to co-operate when dealing with file handles. |
1067 | * | 1067 | * |
1068 | * export_operations contains two basic operation for dealing with file handles, | 1068 | * export_operations contains two basic operation for dealing with file |
1069 | * decode_fh() and encode_fh(), and allows for some other operations to be defined | 1069 | * handles, decode_fh() and encode_fh(), and allows for some other |
1070 | * which standard helper routines use to get specific information from the | 1070 | * operations to be defined which standard helper routines use to get |
1071 | * filesystem. | 1071 | * specific information from the filesystem. |
1072 | * | 1072 | * |
1073 | * nfsd encodes information use to determine which filesystem a filehandle | 1073 | * nfsd encodes information use to determine which filesystem a filehandle |
1074 | * applies to in the initial part of the file handle. The remainder, termed a | 1074 | * applies to in the initial part of the file handle. The remainder, termed |
1075 | * file handle fragment, is controlled completely by the filesystem. | 1075 | * a file handle fragment, is controlled completely by the filesystem. The |
1076 | * The standard helper routines assume that this fragment will contain one or two | 1076 | * standard helper routines assume that this fragment will contain one or |
1077 | * sub-fragments, one which identifies the file, and one which may be used to | 1077 | * two sub-fragments, one which identifies the file, and one which may be |
1078 | * identify the (a) directory containing the file. | 1078 | * used to identify the (a) directory containing the file. |
1079 | * | 1079 | * |
1080 | * In some situations, nfsd needs to get a dentry which is connected into a | 1080 | * In some situations, nfsd needs to get a dentry which is connected into a |
1081 | * specific part of the file tree. To allow for this, it passes the function | 1081 | * specific part of the file tree. To allow for this, it passes the |
1082 | * acceptable() together with a @context which can be used to see if the dentry | 1082 | * function acceptable() together with a @context which can be used to see |
1083 | * is acceptable. As there can be multiple dentrys for a given file, the filesystem | 1083 | * if the dentry is acceptable. As there can be multiple dentrys for a |
1084 | * should check each one for acceptability before looking for the next. As soon | 1084 | * given file, the filesystem should check each one for acceptability before |
1085 | * as an acceptable one is found, it should be returned. | 1085 | * looking for the next. As soon as an acceptable one is found, it should |
1086 | * be returned. | ||
1086 | * | 1087 | * |
1087 | * decode_fh: | 1088 | * decode_fh: |
1088 | * @decode_fh is given a &struct super_block (@sb), a file handle fragment (@fh, @fh_len) | 1089 | * @decode_fh is given a &struct super_block (@sb), a file handle fragment |
1089 | * and an acceptability testing function (@acceptable, @context). It should return | 1090 | * (@fh, @fh_len) and an acceptability testing function (@acceptable, |
1090 | * a &struct dentry which refers to the same file that the file handle fragment refers | 1091 | * @context). It should return a &struct dentry which refers to the same |
1091 | * to, and which passes the acceptability test. If it cannot, it should return | 1092 | * file that the file handle fragment refers to, and which passes the |
1092 | * a %NULL pointer if the file was found but no acceptable &dentries were available, or | 1093 | * acceptability test. If it cannot, it should return a %NULL pointer if |
1093 | * a %ERR_PTR error code indicating why it couldn't be found (e.g. %ENOENT or %ENOMEM). | 1094 | * the file was found but no acceptable &dentries were available, or a |
1095 | * %ERR_PTR error code indicating why it couldn't be found (e.g. %ENOENT or | ||
1096 | * %ENOMEM). | ||
1094 | * | 1097 | * |
1095 | * encode_fh: | 1098 | * encode_fh: |
1096 | * @encode_fh should store in the file handle fragment @fh (using at most @max_len bytes) | 1099 | * @encode_fh should store in the file handle fragment @fh (using at most |
1097 | * information that can be used by @decode_fh to recover the file refered to by the | 1100 | * @max_len bytes) information that can be used by @decode_fh to recover the |
1098 | * &struct dentry @de. If the @connectable flag is set, the encode_fh() should store | 1101 | * file refered to by the &struct dentry @de. If the @connectable flag is |
1099 | * sufficient information so that a good attempt can be made to find not only | 1102 | * set, the encode_fh() should store sufficient information so that a good |
1100 | * the file but also it's place in the filesystem. This typically means storing | 1103 | * attempt can be made to find not only the file but also it's place in the |
1101 | * a reference to de->d_parent in the filehandle fragment. | 1104 | * filesystem. This typically means storing a reference to de->d_parent in |
1102 | * encode_fh() should return the number of bytes stored or a negative error code | 1105 | * the filehandle fragment. encode_fh() should return the number of bytes |
1103 | * such as %-ENOSPC | 1106 | * stored or a negative error code such as %-ENOSPC |
1104 | * | 1107 | * |
1105 | * get_name: | 1108 | * get_name: |
1106 | * @get_name should find a name for the given @child in the given @parent directory. | 1109 | * @get_name should find a name for the given @child in the given @parent |
1107 | * The name should be stored in the @name (with the understanding that it is already | 1110 | * directory. The name should be stored in the @name (with the |
1108 | * pointing to a a %NAME_MAX+1 sized buffer. get_name() should return %0 on success, | 1111 | * understanding that it is already pointing to a a %NAME_MAX+1 sized |
1109 | * a negative error code or error. | 1112 | * buffer. get_name() should return %0 on success, a negative error code |
1110 | * @get_name will be called without @parent->i_sem held. | 1113 | * or error. @get_name will be called without @parent->i_sem held. |
1111 | * | 1114 | * |
1112 | * get_parent: | 1115 | * get_parent: |
1113 | * @get_parent should find the parent directory for the given @child which is also | 1116 | * @get_parent should find the parent directory for the given @child which |
1114 | * a directory. In the event that it cannot be found, or storage space cannot be | 1117 | * is also a directory. In the event that it cannot be found, or storage |
1115 | * allocated, a %ERR_PTR should be returned. | 1118 | * space cannot be allocated, a %ERR_PTR should be returned. |
1116 | * | 1119 | * |
1117 | * get_dentry: | 1120 | * get_dentry: |
1118 | * Given a &super_block (@sb) and a pointer to a file-system specific inode identifier, | 1121 | * Given a &super_block (@sb) and a pointer to a file-system specific inode |
1119 | * possibly an inode number, (@inump) get_dentry() should find the identified inode and | 1122 | * identifier, possibly an inode number, (@inump) get_dentry() should find |
1120 | * return a dentry for that inode. | 1123 | * the identified inode and return a dentry for that inode. Any suitable |
1121 | * Any suitable dentry can be returned including, if necessary, a new dentry created | 1124 | * dentry can be returned including, if necessary, a new dentry created with |
1122 | * with d_alloc_root. The caller can then find any other extant dentrys by following the | 1125 | * d_alloc_root. The caller can then find any other extant dentrys by |
1123 | * d_alias links. If a new dentry was created using d_alloc_root, DCACHE_NFSD_DISCONNECTED | 1126 | * following the d_alias links. If a new dentry was created using |
1124 | * should be set, and the dentry should be d_rehash()ed. | 1127 | * d_alloc_root, DCACHE_NFSD_DISCONNECTED should be set, and the dentry |
1128 | * should be d_rehash()ed. | ||
1125 | * | 1129 | * |
1126 | * If the inode cannot be found, either a %NULL pointer or an %ERR_PTR code can be returned. | 1130 | * If the inode cannot be found, either a %NULL pointer or an %ERR_PTR code |
1127 | * The @inump will be whatever was passed to nfsd_find_fh_dentry() in either the | 1131 | * can be returned. The @inump will be whatever was passed to |
1128 | * @obj or @parent parameters. | 1132 | * nfsd_find_fh_dentry() in either the @obj or @parent parameters. |
1129 | * | 1133 | * |
1130 | * Locking rules: | 1134 | * Locking rules: |
1131 | * get_parent is called with child->d_inode->i_sem down | 1135 | * get_parent is called with child->d_inode->i_sem down |
1132 | * get_name is not (which is possibly inconsistent) | 1136 | * get_name is not (which is possibly inconsistent) |
1133 | */ | 1137 | */ |
1134 | 1138 | ||
1135 | struct export_operations { | 1139 | struct export_operations { |