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[PATCH] swap: update swapfile i_sem comment 

Update swap extents comment: nowadays we guard with S_SWAPFILE not i_sem.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Hugh Dickins 2005-09-03 15:54:31 -07:00 committed by Linus Torvalds
parent fd4fd5aac1
commit b0d9bcd4bb
1 changed files with 1 additions and 1 deletions
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mm/swapfile.c
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@ -926,7 +926,7 @@ add_swap_extent(struct swap_info_struct *sis, unsigned long start_page,
* requirements, they are simply tossed out - we will never use those blocks
* for swapping.
*
* For S_ISREG swapfiles we hold i_sem across the life of the swapon. This
* For S_ISREG swapfiles we set S_SWAPFILE across the life of the swapon. This
* prevents root from shooting her foot off by ftruncating an in-use swapfile,
* which will scribble on the fs.
*