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| author | Al Viro <viro@zeniv.linux.org.uk> | 2013-05-16 03:02:48 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2013-06-29 10:46:49 +0200 |
| commit | 5ded75ec4c576577cae7d556e671d11d0c80c2fc (patch) | |
| tree | 964c5d165f74933df96d6fa16f9bd866a7308727 /include | |
| parent | [readdir] switch dcache_readdir() users to ->iterate() (diff) | |
| download | linux-5ded75ec4c576577cae7d556e671d11d0c80c2fc.tar.xz linux-5ded75ec4c576577cae7d556e671d11d0c80c2fc.zip | |
[readdir] convert ext3
new helper: dir_relax(inode). Call when you are in location that will
_not_ be invalidated by directory modifications (block boundary, in case
of ext*). Returns whether the directory has survived (dropping i_mutex
allows rmdir to kill the sucker; if it returns false to us, ->iterate()
is obviously done)
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/fs.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index 40293a6ce804..aa9770c7e8df 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2725,5 +2725,11 @@ static inline bool dir_emit_dots(struct file *file, struct dir_context *ctx) } return true; } +static inline bool dir_relax(struct inode *inode) +{ + mutex_unlock(&inode->i_mutex); + mutex_lock(&inode->i_mutex); + return !IS_DEADDIR(inode); +} #endif /* _LINUX_FS_H */ |